Sulfonic-Acid-Based Pseudogemini Surfactant Stabilized Emulsions in Acidic Environments: Removal of Organic-Inorganic Hybrid Blockage

Li，Qi1; Cao，Yang1; Shao，Xianzhen2; Xu，Zhenghe3; Wang，Zengzi1; Li，Yuesheng2; Qin，Yancai2; Sun，Dejun1

2023-12-01

10.1016/j.molliq.2023.123355

Journal of Molecular Liquids   影响因子和分区

0167-7322

At present, many researchers are paying attention to pseudogemini surfactant system. In our previous study, oleic-acid-based pseudogemini surfactants (D-OA) assembled by electrostatic interaction between polyether amine (Jeffamine D230) and oleic acid (OA) exhibit extremely high surface activity, but are pH-responsive and unstable in acidic environments. In this paper, OA is replaced by dodecylbenzene sulfonic acid (DBSA) to assemble sulfonic-acid-based pseudogemini surfactants (D-SA). D-SA can stabilize oil-in-water (O/W) emulsions in acid solutions with 4 mol/L H concentration, whereas the preferred O/W emulsions are inverted to water-in-oil (W/O) with further increase H concentration in the aqueous phase. The cost-efficient O/W acidic emulsions have excellent salt-resistance, thermal stability, and controlled release of DBSA. Additionally, the acidic emulsions have a dual action that capable of removing asphaltene deposits and dissolving calcite scales (CaCO), with the maximum corrosion efficiency exceeding 85 %. This study extends the use of pseudogemini surfactant assembled by electrostatic interaction in harsh environments, which is likely to be of significant potential for practical applications to acidification and unblocking of unconventional oil and gas reservoirs.

Acidic emulsions Dodecylbenzene sulfonic acid Electrostatic interaction Pseudogemini surfactant Reservoir acidification/unblocking

SCI ; EI

英语

其他

WOS:001109436300001

20234314961155

Acidification ; Calcite ; Calcium carbonate ; Coulomb interactions ; Flocculation ; Oleic acid ; organic-inorganic materials ; Ostwald ripening ; Petroleum reservoir engineering

Minerals:482.2 ; Petroleum Deposits : Development Operations:512.1.2 ; Electricity: Basic Concepts and Phenomena:701.1 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2 ; Food Processing Operations:822.2

CHEMISTRY

2-s2.0-85174678323

Scopus

1.Key Laboratory of Colloid and Interface Chemistry,Ministry of Education,Shandong University,Jinan,Shandong,250100,China
2.Hekou Oil Production Plant of Shengli Oilfield Branch of Sinopec,Dongying,Shandong,257200,China
3.Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials,Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Li，Qi,Cao，Yang,Shao，Xianzhen,et al. Sulfonic-Acid-Based Pseudogemini Surfactant Stabilized Emulsions in Acidic Environments: Removal of Organic-Inorganic Hybrid Blockage[J]. Journal of Molecular Liquids,2023,391.

Li，Qi.,Cao，Yang.,Shao，Xianzhen.,Xu，Zhenghe.,Wang，Zengzi.,...&Sun，Dejun.(2023).Sulfonic-Acid-Based Pseudogemini Surfactant Stabilized Emulsions in Acidic Environments: Removal of Organic-Inorganic Hybrid Blockage.Journal of Molecular Liquids,391.

Li，Qi,et al."Sulfonic-Acid-Based Pseudogemini Surfactant Stabilized Emulsions in Acidic Environments: Removal of Organic-Inorganic Hybrid Blockage".Journal of Molecular Liquids 391(2023).